Summit County, Colorado
Summit County, Colorado, has 31,517 residents (July 2025 estimate). Its county seat is Breckenridge. It uses Mountain Time and covers 608 sq mi (1,576 km²) of land.
- Resident population, July 2025
- 31,517
- Land area
- 608 sq mi (1,576 km²)
- County seat or government
- Breckenridge
- Time zone
- Mountain TimeUTC-07:00 in January; UTC-06:00 in July
- Median household income
- $109,773 ± $11,445
- Median home value
- $939,900 ± $84,672
- Median rent, with utilities
- $1,928 ± $114
- Homes lived in by their owners
- 72.1% ± 0.8 points
- County type
- County
- Metro or micro area
- Breckenridge, CO micro areaCentral county
- Water area
- 10.9 sq mi (28.3 km²)
- State
- Colorado
- County code (FIPS)
- 08117
- Coordinates (central point)
- 39.621023, -106.137555
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Summit County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Mountain TimeAmerica/Denver | UTC-07:00 in January; UTC-06:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
4 ZIP Code areas overlap Summit County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
School districts in Summit County, largest first
- Summit School District RE-130,885 people
- West Grand School District 1-JT3,431 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Breckenridge, Colorado (town)4,959 people
- Silverthorne, Colorado (town)4,815 people
- Frisco, Colorado (town)2,825 people
- Blue River, Colorado (town)1,410 people
- Keystone, Colorado (town)1,216 people
- Dillon, Colorado (town)832 people
- Copper Mountain, Colorado (CDP)353 people
- Montezuma, Colorado (town)120 people
- Heeney, Colorado (CDP)63 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Clear Creek County, Colorado25 mi east
- Eagle County, Colorado30 mi west
- Lake County, Colorado31 mi south
- Grand County, Colorado34 mi north
- Park County, Colorado41 mi southeast
Before using this answer on a form
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